Telit Wireless Solutions UC864 manual Logic level specifications, Operating Range Interface levels

UC864-E Hardware User Guide

1vv0300766a Rev.1 - 31/01/08

7 Logic level specifications

Where not specifically stated, all the interface circuits work at 2.6V CMOS logic levels. The following table shows the logic level specifications used in the Telit UC864-Einterface circuits:

For 2.6V CMOS signals:

Absolute Maximum Ratings -Not Functional

Parameter	UC864-E
	Min	Max
Input level on any	-0.3V	+3.0V
digital pin when on
Input voltage on	-0.3V	+3.0 V
analog pins when on

Operating Range - Interface levels

Level	UC864-E
	Min	Max
Input high level	2.0V	2.9 V
Input low level	-0.3V	0.6V
Output high level	2.2V	2.6V
Output low level	0V	0.35V

For 1.8V signals:

Operating Range - Interface levels (1.8V CMOS)

Level	UC864-E
	Min	Max
Input high level	1.5V	2.1V
Input low level	-0.3V	0.5V
Output high level	1.4V	1.8V
Output low level	0V	0.35V

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